Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Petrus Peregrinus de Maricourt and his Epistola de magnete / by Silvanus P. Thompson ...

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Thompson, Silvanus P. (Silvanus Phillips), 1851-1916,

Petrus Peregrinus de Maricourt and his Epistola de magnete / by Silvanus P. Thompson ...

Pierre, de Maricourt, 13th cent. Epistola de magnete.